Electric-lamp socket.



No. 860,867. PATENTED JULY 23, 1907.

T. H. HILL.

ELECTRIC LAMP SOCKET.

APPLICATION FILED AUG.31, 1906.

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a??? www@ No. 860,867. PATENTED JULY 23, 1907.

- T. H. HILL.

ELECTRIC LAMP SOCKET. APPLICATION FILED Amm, 1906.

2 SHEETS-SHEET 2.

WITNESSES @BEIGE V'rHoit'LAs H. HILL,l oF PHILADELPHIA, PENNSYLVANIA.

ELECTRIC-LAMP SOCKET.

To all whom it may concern:

Be it known that -I, THOMAS H. HILL, of the city of Philadelphia, county of Philadelphia, and State of Pennsylvania., have invented an Improvement in Electric-Lamp Sockets, of which the following is a specification. v

My invent-ion has reference to electric lampv sockets, and consists of certain improvements which are fully set forth in the following specifications and shown in the 'accompanying drawings, which form part thereof.

The object of my invention is to provide a construction of electric socket switch, which may be operated by a pull device for turning on orvoif/thecurrent; and more particularly, my object comprehends theoperative parts for a switch of this character which shall be of such compact construction that it may be placed construction. 'o

My invention consists of certain features ofconstruction in `an electric lamp socket in which an intermittently rotated shaft operates the switchcontacts, and is in turn operated by a pivoted flame having a hinge support located to one side of the shaft and 'having means located to the other side of the shaft for operating it, said pivoted frame being spring actuated in one ,di

rection and moved .in the other direction by means of a chain or equivalent means. v

Figure l' is a sectional' elevationoi an electric lamp socket `with luy-.improved circuit controlling switch lapplied thereto; Fig. 2 is an inverted planview of my improved switch mechanism; Fig. 3 is a plan View corresponding to Figf2 of the'circuitcontrolling switch contacts and the separating insulation therefor removed from the-socket;v Fig. 4 is a'sectional elevation on line 4 4 of Fig. 2 of my improved switch meehan-il ism; Fig. 5 is a sectional elevation ofthe same on line .5 5 of Fig. 2; Fig. 6 is al sectional elevation showing the insulation and the manner of connecting the circuits with the socket portion; and Fig. 7'is a similar view showing the manner of connecting the electric circuit with the contact spring of the switch.i

A 'is the socket 'case and may be `formed in any suitable manner and adapted to receive any of the ordinary.

type of lamps. The construction shown is given as an illustration of the adaptability of my invention to a type of socket in commercial use, but I do not restrict myself to any particular'eonstruction of the socket, as

my invention is intended for use with all makes oflamp sockets.

B is the threaded metallic portion adapted to receive the threaded portion of the lamp and constitutes one terminal of the socket. This part B is connected to a binding post B as show n in Figs. 3 and 6 which is adapted to receive the electric light circuit terminal. These parts AB B are secured to an insulating box shaped part D within the socket, and having the central Specification of Letters Patent.

Application filed August 31,1906. Serial No. 332,767'.

withirpau eleNctriNclan'ip socket c'ase of ordinary-size and Patentedsuly 23,1907.

l contactE with`which the bottom of thelamp makes electrical connection. I

e is a spring connecting with the central Contact screw'E. i

F is a contact spring connected to a binding post F make electricalcontact with the springe, The other terminal of the electric light circuit is connected with a binding post I1" y H is \a cam-shaft which .carries the cam G. This any way desired so as to operate upon the contact spring This shaft H is also provided with a ratchet wheel I onlyibeable to stand at such positions as will press the sulating parti) which is also contained wi-thin thesocket case and which, with the part D forms a box shaped cated.

J is a pivoted frame pivoted at P in the base ofthe nsulating part C and extends across the cam-shaft H by therein. In this manner the pivoted frame is made to extend upon both sides of the cam-shaft H, and it is provided 'on the side mostdistant from its pivot P with a pawl O for actuating the ratchet wheel' I withwhich the pawl is pressed into contact by spring R. A spring N, extending from the pivot P of the frame J is formed the ratchet wheel and cam-shaft, and at the same time to normally hold the cam in the position to which it is action of spring S. If the socket is held in the position shown in Fig. 1, or in a corresponding position; it is evident that the chain M will be guided over the tubular part m, but if the socket is held in such a position to bringthe tubular part m to the bottom, then the chain M will hang vertically downward and the pullof the pivoted frame J will be direct.

It is evident that, inthe operation of my improved switch, every pull upon the chain M will move the cam F Whse. maiaining it insulated from the shaft-H. v

Vstructure Within which the switch mechanism is lowith the hooked end to prevent backward motion of'` pulled for the purpose of rocking the frame J against the y also carried by the insulating part D, and is adapted to cam may be formed of insulating material or made in which is formed with four Ateeth so that the cam G will spring Fin contact with the spring e or permit these springs to be separated. The shaft H is journaled at h in bearings formed in the insulating part D and the in-'.

allowing the latter to extend through a curved slot K turned when the current is turned on or off. A spring G a quarter of a revolution and that no manipulation-oi the chain M could bring the cam into any position excepting to open or close the switch. Furthermore the cam together with the shaft H and ratchet wheel are free to rotate in one direction so that the action of the spring F by being made strong is such as to snap the cam around in advance of the pawl when the pawl is moved to throw the ratchet Wheel to a position which will enable-the springto act upon it to insure it rotation. When this action takes place, the circuit is quickly broken and the lswitch therefore vacts as a snap switch. Y

The important feature of my invention is in the con-- struction'which enables me to employ the pivoted frame .l in conjunction with the rotating cam-shaft, whereby a large throw for the pawl may be had without increasing the ordinary size of the lamp socket case.

-The pivoted frame J is preferably made of two plates connected together, between which the pawl O and springs R and N are arranged, and by locating such frame to one side of the central line of the socket, the

cam G, on the other side, I am enabled to obtain direct pull upon the pivoted frame by the parts L M through the center of the socket'case as will be more clearly seen by reference to Fig. 2.

'I have shown my improvement in the form which l have found excellently adapted for commercial use and at the same time economical in construction, but I wish 'it to be understood that the minor details of the conf struction may be modied from those herein shown7 and I therefore do not restrict myself thereto.

Having now'described my invention what I claim as new and desire to secure by Letters Patent isz- 1. In an electric lamp socket, the combinationof a contact spring, a shaft, a ratchet wheel to rotate the shaft, a cam secured to the shaft for operating the Contact spring, a pivoted frame having a hinge support located at one side loi? the-shaft and extending to the other -side'of the shaft, means on the pivotedirame on the si'de most distant from its pivot for operatingthe ratchet wheel, and means connecting with the pivoted frame and extending through the side of the socket for operating said frame.

'2. in an electric lamp socket, the combination of a contact spring, a shaft, a ratchet wheel to rotate the'shaft, a cam .secured ,to vthe' shaft vfor operating the contact spring, a pivoted frame having a hinge support located at one side of the shaft and extending to the other side of the shaft, a spring to move the frame in one direction, means on the pivoted frarne on the side most distant from its pivot for operating the ratchet wheel, and means connecting with the pivoted frame and extending through the side or the socket for operating said frame against the action of its spring.

3. ln an electric lamp socket, the combination of a contact spring, a shaft, n ratchet lwheel to rotate the shaft, a' cam secured to the shaft for operating the contact spring, Aa pivoted spi'ing actuated frame having a hinge i support located at one side of the shaft and extending to the other side of the said shaft, means on the pivoted frame on the side most distant from its pivot for operating the ratchet wheel forward, a spring to lock the ratchet wheel against rotating backward and means connecting with the pivoted frame and extending through the side of the socket for operating said frame for causing it to rotate the ratchet wheel forward. i

4. In an electric lamp socket, circuit closing devices, a shaft adapted to operate the circuit closing devices, a pivoted frame having a hinged support located at a distance to one side of the shaft and provide with means at the other `side of the .shaft for rotating said shaft, and means connecting with the pivoted frame and extending through the side of the socket for operating the pivoted frame.

5. In an electric lamp switch, the combination of a circuit controlling contact spring, a loosely pivoted cam shaft and cam for operating the spring when moved to one position to close the switch and for being roperated by the spring when moved intoa position preliminary to opening the switch. a ratchet wheel on the shaft to rotate it, and a pivoted frame having a pawl structure for intermittently operating the ratchet wheel.

6. In an electric lamp switch, the combination of a cr cuit controlling contact spring, a loosely pivoted cam shaft and cam for operating the spring when moved to one position to close the switch and for being operated by the spring when moved into a position preliminary to opening the switch, a ratchetl wheel having four teeth on the shaft to rotate it, a spring catch to prevent the ratchet wheel moving backward and a pivoted frame having a pawl structure for intermittently operating the ratchet wheei.

7. In an electric lamp socket, the case having two inclosed parts of insulating material and forming a switch chamber between them, in combination with a circuit clos ing spring secured to one of said parts, a shaft provided with a ratchet wheel and a cam for operating the spring journaled between the two insulating parts, a pivoted frame hinged to the other`- of the two insulatingparts 'and extending across the shaft, means carried thereby for operating the ratchet wheel, and means extending through the side of the socketfor operating the pivoted frame.

S. In an electric lamp socket and switch, the combina# tion of circuit closing devices', a transverse shaft H having the cam G and ratchet wheel I, a pivoted frame J formed of two side plates inclosing the ratchet wheel and having slots Ii for the shaft, a pawl O carried by the pivoted framefor operating the ratchet .wheelf and means extending to within the socket for operating the pivoted frame.

In testimony ot which invention, I hereunto set my hand. r

Taos'. H. HILL.

Witnesses R. M. HUNTER, R. M. KELLY. 

